249 |
|
static int |
250 |
|
dominant_axis(char *v1, char *v2, char *v3) |
251 |
|
{ |
252 |
< |
int v1i = atoi(v1), v2i = atoi(v2), v3i = atoi(v3); |
252 |
> |
VNDX v1i, v2i, v3i; |
253 |
|
FVECT e1, e2, vn; |
254 |
|
int i, imax; |
255 |
|
|
256 |
< |
VSUB(e1, vlist[v2i], vlist[v1i]); |
257 |
< |
VSUB(e2, vlist[v3i], vlist[v2i]); |
256 |
> |
if (!cvtndx(v1i, v1) || !cvtndx(v2i, v2) || !cvtndx(v3i, v3)) |
257 |
> |
return(-1); |
258 |
> |
VSUB(e1, vlist[v2i[0]], vlist[v1i[0]]); |
259 |
> |
VSUB(e2, vlist[v3i[0]], vlist[v2i[0]]); |
260 |
|
VCROSS(vn, e1, e2); |
261 |
|
for (i = imax = 2; i--; ) |
262 |
|
if (vn[i]*vn[i] > vn[imax]*vn[imax]) |
289 |
|
if ((ax = dominant_axis(av[i], av[i+1], av[i+2])) >= 0) |
290 |
|
break; |
291 |
|
if (ax < 0) |
292 |
< |
return(0); |
292 |
> |
return(1); /* ignore degenerate face */ |
293 |
|
if (++ax >= 3) ax = 0; |
294 |
|
ay = ax; |
295 |
|
if (++ay >= 3) ay = 0; |
305 |
|
} |
306 |
|
/* break into triangles & output */ |
307 |
|
if (!polyTriangulate(poly, &tri_out)) |
308 |
< |
return(0); |
308 |
> |
error(WARNING, "self-intersecting face"); |
309 |
|
polyFree(poly); |
310 |
|
return(1); |
311 |
|
} |